Thinking without Portals: Exploiting glitches to complete Portal in 14 minutes with only 15 portals

FnzzyGoesFast:This is a segmented speedrun of Portal done with 15 Portals in the time of 13:47.640. This is the least amount of Portals that you can finish the game with. No scripts, hacks or cheat protected commands were used in this run.

Stuff like this blows my mind.

See also

Portal: The world between two portals — Crowbcat created a Portal setup that had Chell, the game’s heroine, trapped between two portals that crushed her. The results were an astounding wonderland of psychedelic visuals.